Key-fastener



A. s MNMT xiv asuma. APPLICATION HLED MAY2L1920.

A 'DDLIPE LONE, OF CHICAGO, ILLINOIS.

KEY-FASTENER.

Application filed May 27,

To all wiz-om t may concern Be it known that I, ADOLPH F. LONE, a citizen ofthe United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Key-Fasteners, of which the following is a specification.

The object of this invention is to provide a simple and inexpensive device which may be readily applied to any door and so disposed as to cover the keyhole of the door lock and prevent the key being pushed from the lock by a person outside the door.

The invention is illustrated in the accompanying drawing, in which- Figure l is a perspective view of the device in operative position;

Fig. 2 is an elevation of the same with a door key indicated in section and the inol erative position of the fastener indicated by dotted lines;

Fig. 3 is a detail perspective view of the device.

In carrying out my invention, I provide a blank of sheet metal which may be struck up in a stamping machine and comprises a main bar or shank l having tongues 2 projeeting from its opposite edges intermediate its ends. These tongues are bent over so as to lie parallel with the opposite faces of the shank and through the shank and each tongue alined openings 3 are provided to permit the insertion of a fastening screw t therethrough into the door so as to pivota-lly attach the device to the door. One end of the shank is provided with a notch 5 in that edge which, in the operative position of the device, is the upper edge and from the lower edge of the shank in vertical alinement with the said notch a covering lip 6 depends, the said lip being of sufficient area to entirely cover the keyhole below the key-receiving portion thereof. The shank is extended, as shown at 7, beyond the notch 5 and the lip 7 so as to strengthen the device adjacent the said notch by providing a sniiicient body of material thereat to prevent the device being easily bent so that it will not properly engage the door key. At the opposite end of the shank oppositely disposed longitudinally extending flanges 8 are provided upon the upper and lower edges of the same and these flanges facilitate the manipulation of the device as will be readily understood. The opposite disposition of the tongues 2 as well as the opposite arrangement of the flanges 8 permit the device to be applied to either a Specification of Letters Patent.

Patented J une 7, 1921. i

1920. serial No. 334,662. i

right or left-hand door 2, furthermore serve to offset the device from the door so that the shank will not have to be bent or distorted in order to clear the escutcheon of the lock.

As will be readily understood from what has been said, the fastener is pivotally mounted upon a door, indicated at 9, by inserting a pivot screw 4 through the tongues 2.and the shank l into the door, the said pivot being so located that when the shank is in a horizontal position it will extend over the escutcheon 10 of the door lock. After the key ll has been turned so as tothrow the bolt of the lock, the shank 1 is turned upwardly to the horizontal position, shown in F ig. l and in full lines in Fig. 2, whereupon the notch 5 will engage the stem of the key and will support the same and the covering `lip 6 will entirely cover and close the keyhole slot in the escutcheon 10 and in the door. Any attempt by an outsider to then push the key from 'the lock in order to permit the bolt to be withdrawn by a false or master key will be frustrated inasmuch as the keyhole slot is covered by the lip 6 against which the blade or wing of the key will impinge when it is attempted to thrust the key from the door. Moreover, the lip 6 will prevent a person outside the door from spying through the keyhole upon the occupants of the door. Y

My device is obviously very simple in its construction and may be produced at a trifling expense. It is easily manipulated by any person and is very eiicient for the purposes for which it is designed.

Having thus described the invention, what is claimed as new is:

l. A device for the purpose set forth comprising a shank provided intermediate its ends with odset pivot-receiving tongues and provided at one end in one edge with a keyengaging notch and upon its opposite edge with a keyhole-covering lip in alinement with said notch. n

2. A device for the purpose set forth comprising a shank provided with oppositely extending longitudinal fia-nges at one end and at its opposite end inV one edge with a key-engaging notch and on the opposite edge with a keyhole-covering lip, and pivotreceiving tongues extending from the oppoand the said tongues site edges of the shank intermediate the ends thereof.

.In testimony whereof I aiiix my signature. Y

ADOLPI-I F. LONK. [n s] 

